Sudan’s military ruler on Tuesday condemned the killing of five schoolchildren at a rally as the United Nations called for an investigation ahead of planned talks between protest leaders and the generals.

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Demonstrators accused feared paramilitaries of the Rapid Support Forces, headed by powerful General Mohamed Hamdan Daglo, of shooting dead the five teenagers at a protest against shortages of bread and fuel in the city of Al-Obeid on Monday.

The killings come as protest leaders are due to hold talks with the ruling generals on Tuesday on the remaining aspects of installing civilian rule after the two sides inked a power-sharing deal earlier this month.

The UN children’s agency UNICEF called on the authorities “to investigate” the killings and hold the perpetrators accountable.